Vacuum cleaner



FIG. 1 is a front, left perspective view of the vacuum cleaner showingour new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side plan view thereof, the right side being a mirrorimage thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom view thereof.

The ornamental design for a vacuum cleaner, as shown and described.